Vehicle-jack.



F. W. UNGER. VEHICLE JACK, APPLICATION FILED 0OT. 18, 1910.

1,032,453. I Patented Ju1 '1'6, 1912.

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rnnnnnro WM. Unonn, or nnnsronr, PENNSYLVANIA, essrenon, BYnsnn'essionmnn'rs, T ELLEN n. UNGER. or nnnsronr, rnnnsxqnvamn.

VEHICLE-JACK.

. Specification of Letters Patent.

Patented July 16,

Application filed October 18, 1910. Serial m. 587.688.

To all whom it may concern.

Be it known that I, Fnnnnmo W. Uncnn, a citizen of theUnited States, anda resident of Leesport, .in the county of Berks and Stateof'Pennsylvania, have invented certain new and useful Improvements inVey hiclc-Jacks, of which the following is a specification.

My invention relates to an improved mechanism adapted more particularlyfor raising automobiles so as'to relieve the rubber tires of theobjectionable weight of the 1 vehicle thereon when not in service; and

my object is to provide a simple and easily operated mechanism for suchl'JIIFPOSG.

Hert0fore vehicle jacks having pivoted front and rear lift-ing'arms havebeen commonly provided with horizontal connections between said armsthrough ch their joint operation is eiiected.

My invention provides for dispensing with such connections. so as to:not onlyg-reatly.

simplify the construction and-prevent contact, with depending artsof thevehicle, but to permit of in ependeiitly-swinging the disconnected frontand rear arms to the most convenient operative'aed inoperativepositions.

The invention is fullydesrribed in connection with. the accompanyingdrawing illustrating an at present preferred embodiment thereof, and thenovel features are specifically pointed out in the claims.

Figure 1, is a longitudinal section of my improved device showin thefront and rear radius arms set for liftlng'a vehicle which is placed inproper relative position; the independent swinging of the respectivearms.

to folded-down position being indicated in dotted lines. l 1g. 2; is asimilar View to Fig. 1 showingthe,radius armi lifts in vehicle elevatingpositions."Finish-is an end view of the apparatus lookinginthe directionof the arrow, Fig. 2.

The drawings SllOW'lIiy invention in connection with certain parts of avehicle upon which it is adapted to operate; the front axle .2, and rearaxle 3, with rubber-tired wheels 4; and 5 respectively, being indicateddiagrammatically together with the longitudinal frame-bar-6 andinterposed springs 7 and 8.

In my improved mechanism independcntly operating lifting means areprovided parallel bracing bar 16;

for the front and rear axles, consistinges" shown, of radius arms 10andll l, whichg .are== pivotally mounted respectively front and rearportions 12 and 13 of a corn arms upon the base being variable to'correspond with the wheel. base of the vehicle to be operated u mn, bymeans cit-an adjustable intermediate base portion 14. as indicated.

upon the I nect-ing base; the spacing apart of said".

The radiusarms 11 are adapted to be swung into lowered horizontalposition upon. the base as shown in dotted lines in Fig. 1, and thefront arms'lO may be similarly lowehed tdinoperative position, each pairof arihs being swung independently of the other; so

that the whole mechanism may either be folded into small compass forstorage, or be placed flat for service without, any part thereofstriking depending parts of the vehicle.

Both the front .and rear lifts are preferably made up of a pair ofradius arms as shown in Fig. 3; each pair being spaced apart laterallyby a transverse pivot banlf which fixed to the base 12, 13, and by a andtheir lateral spacing on said bars being adjustable tobest suit thevehicle or vehicles to which the:

mechanism is particularly adapted. The lowered arms 11, which Idesignate as'the rear arms because they are preferably so loliability ofoutedrclative to the vehicle operated upon and its direction of movementas indicated,

ext-end rearward from their pivotal connection tothe base, when themeclw 'llSlll is placed. for operation, as shown, so he they may bereadily swung upward to the for-. 1

wardly inclined positima indicated in Fig. 1, with the beveledaxle-engaging erds 11 thereof just to the rear of the arise oi theplaced vehicle. the freely swihging arms inproper opera tive'positionindependently of con act with the axle, I provide a simple adjustablesupport consisting as shown of a pivot-ed prop 20, the free end of whichrests upon the base.

The lifting power is applied to the front radius arms 10, as shown; thepreferred means indicated being an ordinary jackscrew 25, the upper end26 of which is pivotallv connected to the transverse connectmg bar 16 ofthe lifting arms, while the lower end thereof is dd voted upon In orderto loosely support-- said fixed step in lowering inoperative position asprev1ously'-menand rear arms.

fixed step 27, preferably adjustably located on the base 12. I The jackis removed from the arms 10 to tioned. r

The spacing-apart of the front and rear radius-arm lifts being properlyadjusted to the spac'ingo'f the axles pn the vehicle, and the arms 11being lowered to horizontal po sition as indicated in dotted lines Fig.1, the vehicle may be readily positioned above the mechanism withoutstriking any part of the latter; the front arms being ordinarilysupported in the. operative position indicated without objection, thoughreadily low ered if desired, andthere ing connections whateverbetweenthe front The arms 11 being then swung into operative relationwith-the axle as the front arms are Z as indicateddn Fig.1,the-jack-screw 25 is simply operated to. swing the arms 1011pward andrearward'in an arc 28,-thus raising the axle 2 and simultaneously movingthe veh cle longitudinally. so that the other axle 3 will besimilarlyraised by the corresponding swing of the arms 11 in their are 25., untilall the wheels are supported clear of the floor as desired; thus servingas a connection between the front and rear lifts whereby they arejointly operated when in service, though they are normally movableindependently. As soon I lowered by a reverse operation sufiiciently tosupport the vehicle upon the floor, the rear arms are left'free to swingout of its path. a

The preferred construction specifically described and shown mayobviously be readilv modified without departing from the'essentials ofthe invention as defined in the claims.

Copies of this patent ma be obtained for being no interfer the vehicleitselfcomprising indep arm lifts for the front and rear axles, alon-'.gitudinally extensible connecting base upon and a jack What I claimis 1. An elevating mechanism for vehicles comprising radius-arm liftsfor the front and rear axles respectively, and adjustable connectingmeans between said lifts, said front and rear lifts being arranged toswing independently, means for loosely supporting. the lift for the rearaxle in determined inclined position relative thereto, and a jackmechanism arranged to directly operate upon the other radius-arm liftsubstantially asset forth. 1

2. An elevatin mechanism for vehicles l endently swinging radiuswhiehsaid lifts are pivotallymounted, means for, loosely supporting the rearlift in determined inclined position on said base, a fixed stop on thefront portion of said base, and a jack mechanism seated upon said stopand adapted to operatively engage. the front lift, substantially as setforth.

3. An elevating mechanism for vehicles comprising a longitudinallyextensible connectingbase, independently swinging pairs ofradius armseach pivotally mounted on said base and adjustably spaced-apart by atransverse connecting bar, means for loosely supporting the rear lift indetermined inclined position on said base, an adjustably fixed step onthe front-portion of'said base, mechanism seated on said step. andengaging said transverse bar, substantially' as set forth. v

In testimony whereof, I afiix my signature, in the presence of twowitnesses.

" FREDERIC WM. UNGER.

Witnesses:

- 'D. M. STEWART, W. G. STEWART.

five cents each, by addressing the Commissioner of Patents, Washington,D. 0."

